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v3.23.1

Organization and principal activities (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jun. 10, 2020 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Organization and principal activities (Details) [Line Items] |  |  |  |
Settle obligations Of VIEs amounting |  | $ 3,800 | $ 3,800 | $ 3,800
Offering expenses |  |  |  | 29,904
Loss from operations |  | 19,200 | 45,900 | 63,000
Net cash used in operating activities |  | 4,404 | (21,738) | (2,038)
Cash and cash equivalents and short-term deposit |  | 15,100 |  |
Short-Term Investments |  | 11,700 |  |
Consolidated Entity, Excluding Consolidated VIE [Member] |  |  |  |
Organization and principal activities (Details) [Line Items] |  |  |  |
Net cash used in operating activities |  | $ 4,400 | $ 21,700 | $ 2,000
IPO [Member] |  |  |  |
Organization and principal activities (Details) [Line Items] |  |  |  |
Sale of stock, shares issued (in Shares) | 2,010,000 |  |  |
Class A Ordinary Shares [Member] | IPO [Member] |  |  |  |
Organization and principal activities (Details) [Line Items] |  |  |  |
Ordinary shares issued (in Shares) | 20,100,000 |  |  |
Sale of stock, price per share (in Dollars per share) | $ 18 |  |  |
American Depositary Receipts [Member] | IPO [Member] |  |  |  |
Organization and principal activities (Details) [Line Items] |  |  |  |
Sale of stock, price per share (in Dollars per share) | $ 18 |  |  |
Offering expenses | $ 27,600 |  |  |
Mr. Chaohui Chen and Mr. Zhiping Peng [Member] |  |  |  |
Organization and principal activities (Details) [Line Items] |  |  |  |
Redesignation of ordinary shares (in Shares) |  | 122,072,980 |  |

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